Question 22: conclusion
Question 23: analyze
Answer:
These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects.
Explanation:
Answer:
The energy of the photon is 
.
Explanation:
Given:
The wavelength of the photon is given as:
The energy of a photon in terms of its wavelength is given as:
Plug in all the given values and calculate energy of the photon, 
. This gives,
Therefore, the energy of the photon is .
Hey there!
N₂ has a density of 1.25 grams per liter.
We have 2.31 liters of N₂.
2.31 x 1.25 = 2.8875
We have 2.8875 grams of N₂.
Find molar mass of N₂:
N: 2 x 14
------------
28 g/mol
2.8875 ÷ 28 = 0.10
There is 0.10 mol of nitrogen in 2.31 L of N₂.
Hope this helps!
